In the course of a century we’ve gone from Dr. Albert C. Barnes, the cranky millionaire who would allow paintings from his exceptional collection to be reproduced only in black and white — he wanted viewers to understand that they weren’t looking at the real thing — to Charles Saatchi, the British megacollector who, by his own account, spends several hours a day looking at art online. The real has undergone a transformation in recent decades, however, and now you can experience art virtually and even attend the VIP Art Fair 2.0, the Internet’s first major art bazaar.